C8051T627-B-GM Silicon Labs, C8051T627-B-GM Datasheet - Page 172

• Manufacturer Part Number: C8051T627-B-GM
• Description: 8-bit Microcontrollers - MCU UBS, 64K OTP MCU
• Manufacturer: Silicon Labs

Specifications of C8051T627-B-GM

• Rohs: yes
• Core: 8051
• Processor Series: C8051T627
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 48 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 3328 B
• On-chip Adc: Yes
• Operating Supply Voltage: 1.8 V to 5.25 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-32
• Mounting Style: SMD/SMT
• Program Memory Type: EPROM

C8051T620/1/6/7 & C8051T320/1/2/3
23.6. Function Addressing
The FADDR register holds the current USB0 function address. Software should write the host-assigned 7-
bit function address to the FADDR register when received as part of a SET_ADDRESS command. A new
address written to FADDR will not take effect (USB0 will not respond to the new address) until the end of
the current transfer (typically following the status phase of the SET_ADDRESS command transfer). The
UPDATE bit (FADDR.7) is set to 1 by hardware when software writes a new address to the FADDR regis-
ter. Hardware clears the UPDATE bit when the new address takes effect as described above.
USB Register Definition 23.7. FADDR: USB0 Function Address
USB Register Address = 0x00
172
Name
Reset
6:0 FADDR[6:0] Function Address Bits.
Bit
Type
7
Bit
UPDATE
Name
UPDATE
R
7
0
Function Address Update Bit.
Set to 1 when software writes the FADDR register. USB0 clears this bit to 0 when the
new address takes effect.
0: The last address written to FADDR is in effect.
1: The last address written to FADDR is not yet in effect.
Holds the 7-bit function address for USB0. This address should be written by software
when the SET_ADDRESS standard device request is received on Endpoint0. The
new address takes effect when the device request completes.
6
0
5
0
Rev. 1.2
4
0
FADDR[6:0]
Function
R/W
3
0
2
0
1
0
0
0